Improvement in steam-boilers



ATENT OEEIcE.

FREDERICK A. WOODSON, OF SELMA, ALABAMA.

IMPROVEMENT IN STEAM-BOILERS.

Specication forming part ofeLetters Patent No. 134,720, dated January 7, 1873.

To all whom it may concern:

Beitknown thatI,FREDERIOKAWOODSON, of Selma, in the count-y of Dallas and State of Alabama, have invented certain new and useful Improvements in Steam-Boilers; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawing making a part of this specication, in which- Figure l represents, in elevation, partly sectional, a boilerphaving my improvement'applied to it; Fig. 2 represents a top plan of a pair of boilers with the circula tor, heater, and settler applied thereto, and Fig. 3 represents an end view of the same.

My invention consists in the arrangement of a water-leg and mud-drum at the rear of and below the boiler, and a similar water-leg and mud-drum near the front of the boiler, andimmediately in and over the re, fuel, or :tire-box, so as to receive the intensity of the burning gases, and connecting these two muddrums by side pipes outside of the brick-work, so as to afford free circulation, uniform tempera ture, and separation of all mud and sediment from the water.

To enable others skilled in the art to make .and use my invention, I will proceed to de` scribe the same with reference to the drawing.

A A represent a pair of ordinary tubular boilers, and which maybe bricke'd up, as shown in the drawing. At or near the rear ends of these boilers are water-legs B, which at their lower ends connect with a mud-drum, G, in which the sediment is collected, and from which,

- with suitable cocks, it may be blown out when necessary. From the ends of this mud-drum circulating-pipes D D extend forward and conbe blown out through suitable cocks, but the most will settle in the drum C. The mud-drum E is located in the combustion-chamber Gr, immediately above or over the fuel, which is burned upon the bars H. The front end c ofthe grate-bars is left open for the freel admission of air, which becomes highly heated and mixes with the gases rising or distilled from the burning coal in the combustionchamber, and is there burned. rllhe water in the drum E and in the front of the boiler,being in more direct contact or proximity to the burning products or gases, becomes more highly heated than that more remote; but by the system of pipes and drums as herein described the circulation of the water is so rapid as to impart a uniform, or nearly so, temperature to the water.

Any number of boilers may be similarly -united and connected. The setting or brickwork is shown at I and I', the former representing the longitudinaland the latter the cross-walls or brick-work, which latter wall I rests upon the mud-drum E and incloses and protects the water-legs F F, and the circulating-pipes D are outside of said brick-work.

Having thus described my invention, what I claim is- In combination with one, two, or more boilers, A, and with a lire-boxor combustion-chamber, Gr, the mud-drums C E, arranged as shown, viz., the drum C at the rear of the boiler, and the drum E at the front thereof and in the combustion-chamber, and connected to the boilers by the water-legs B F, and to each other by the circulating-pipes D D outside of the brick-work, as and for the purpose described and represented.

F. A. WOODSON.

Witnesses A. B. SToUeHToN, EDMUND MAssoN. 

